[1] Chang Gung Mem Hosp, Linkou Branch, Taoyuan, Taiwan
[2] Sungkyunkwan Univ, Samsung Med Ctr, Sch Med, Seoul, South Korea
[3] Natl Taiwan Univ Hosp, Taipei, Taiwan
[4] Seoul Natl Univ Hosp, Seoul, South Korea
[5] Kaohsiung Med Univ Hosp, Kaohsiung, Taiwan
[6] Merck Pte Ltd, Singapore, Singapore
[7] Merck KGaA, Darmstadt, Germany
[8] Yonsei Univ, Yonsei Canc Ctr, Hlth Syst, Seoul, South Korea